1. 1) I. C. H. Hughes and W. Oldfield: BCIRA J., 10 (1962), 475.
2. 2) N. Tsutsumi and Y. Matsukawa: Imono, 51 (1979), 339.
3. 3) C. A. Zapffe and R. L. Phebus: Trans. ASM, 41 (1949), 259.
4. 4) F. E. Fischer: “Inverse Chill”, Pig Iron Rough Notes (Sloss), 22, Autumn (1939), 12.
5. 5) H. D. Merchant: Recent Research on Cast Iron, Gordon and Breach, Science Publishers, New York, (1968), p. 1.